problem:you can’t boot from zfs-boot, because of a version mismatch between old bootloader-code and upgraded zfs-version. ZFS: unsupported feature: com.delphix:head_errlogZFS: pool ‘foo’ is not supported Can’t find /boot/zfsloaderCant’ find /boot/loader reason:you have upgraded your bootable zpool to a new zfs-version … Continued
system: FreeBSD v13.0-p7 reason: the bootloader is broken (e.g. after update) solution: reinstall the bootloader(s) to your boot disk(s) example: zroot (2-disk zfs-mirror with GPT partition tables) download a bootable FreeBSD-Image(e.g. FreeBSD-13.0-RELEASE-amd64-memstick.img) copy the image-file to a USB-stick (attention: all … Continued
8-core CPU Intel Xeon E5-2665 64 GB DDR3 ECC RAM OS FreeBSD 11.212x hdd’s RAID-Z2 (5400 rpm, SATA-2, consumer-grade) 2x ssd’s L2ARC (SATA-2, consumer-grade) 1x ssd SLOG (SATA-2, consumer-grade) pool specs: 81% full, 40% fragmentationscrub CPU-load: 60..75 % on all … Continued
prerequisite 1: a working Domain-Name-System for all devices (DNS and rDNS), because the kerberos tickets uses DNS-names instead of IP-adresses. Without a working DNS resolution a connection can’t be established. myServer.com → 192.168.0.1 192.168.0.1 → myServer.com #check DNS resolution dig … Continued
boot -chain example with UEFI (=sucessor of BIOS): UEFI … the pc is powered on and the UEFI begins with self-test routines ↓ HDD (configured in UEFI) … UEFI boots from the configured device (e.g. “1st boot device = … Continued
for example we use 2 new HDDs, which are called ada0 and ada1. Quick steps: you have to create 2 partitions on the new disks (1st for the zfs-bootloader, 2nd for the zfs itself) you have to set the first … Continued
System: Intel Avoton 2558 4-core CPU, 32 GB DDR3 ECC RAM, 6 disk RAID-Z2 (WD30EZRX) Info: Scrubbing-speed is not constant, it raises after some time. it begins with 29,7 MB/s after 4 hours the average scrubbing-speed is 131 MB/s after … Continued